A-B1421409MA-AI IDLER PULLEY KIT #13

One New Aftermarket Replacement Flat Idler Pulley Kit #13 for Murray Lawn Tractors

This flat backside idler pulley serves as the engine-to-transmission drive idler on Murray lawn tractors equipped with 38-inch cutting decks. Made from composite glass-filled nylon, it maintains proper belt tension in the motion drive system and is a direct aftermarket replacement for Murray OEM part number 421409MA (also sold under the Fits Briggs and Stratton (B&S) parts program). The "Kit #13" designation is the Murray/Fits Briggs and Stratton catalog classification for this pulley application.

Specifications

• Type: Flat/Backside Idler Pulley
• Material: Composite (glass-filled nylon)
• Outer Diameter (A): 3-23/64" (approx. 3.33")
• Rim Diameter (B): 2-3/4"
• Bore (C): 1/2"
• Overall Width (D): 7/8"
• Offset (E/F): 1/4"
• Application: Engine-to-transmission idler, motion drive system
• Fits: 38" deck, 12 HP lawn tractors (1987-1993)

Compatible Models

Murray 38" Lawn Tractors (1987-1993): 31621x70G, 31720x11B, 31720x11C, 31720x20E, 31720x51A, 31720x51B, 31720x51C, 31721x88A, 31722x95A, 38500A, 38500B, 38500x192A, 38500x192B, 38500x30A, 38500x83A, 38500x92A, 38500x92B, 38501x50A, 38501x50B, 38502x51A, 38502x51B, 38502x66A, 38502x67A, 38502x98A, 38504A, 38504x25A, 38506x199A, 38506x4A, 38510x50A, 38510x59A, 38514x95A, 38515x83A, 38515x92A, 38515x92B, 38516x29A, 38516x52A, 38602x66F, 38602x70H, 38602x70J, 38623x5C, 38623x5D, 38632x66B, 38633x92A, 38633x92B, 38702x20D, 38702x20E, 38702x7A, 38702x7B, 38702x8D, 38702x8E, 38705A, 38705x30A, 38705x5A, 38705x5B, 38706A, 38706x99A, 38706x99B, 38710A, 38711x20A, 38711x29A, 38711x52A, 38711x66A, 38711x67A, 38711x73A, 38711x96A, 38712x53A, 38712x66A, 40507x8B, 40627X92C, 42813x92A

Also Fits Briggs and Stratton (B&S) / Murray branded equipment sold under the Sears, Fits Craftsman, Ranch King, and Scotts labels using the same motion drive idler application.

Replaces Part Number(s):

421409MA, 421409MA-A, 421409, 421409-A, 091179MA, 091179MA-A, 91179, 91179-A, B1421409MA, B1421409MA-AI

Aftermarket Interchange Numbers

Oregon 34-826, Oregon 78-027, Fits Stens 280-499, 280-499-A, Rotary 7978, Prime Line 7-05338, Laser 95515, Countrax 20811500, Murray 300920, Murray 40223

New aftermarket replacement part - not remanufactured, not used.